This part is a kind of semiconductor called 2SK630.

Function of this product has N-Channel MOSFET Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc N-Channel MOSFET Transistor FEATURES ·Drain Current –ID=5A@ TC=25℃ ·Drain Source Voltage- : VDSS= 160V(Min) isc Product Specification 2SK630 DESCRIPTION ·Designed for low voltage, high speed power switching applications such as switching regulators, converters, solenoid and relay drivers. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VDSS Drain-Source Voltage VGS Gate-Source Voltage-Continuous ID Drain Current-Continuous PD Total Dissipation @TC=25℃ TJ Max. Operating Junction Temperature Tstg Storage Temperature VALUE UNIT 160 V ±20 V 5A 40 W 150 ℃ -55~150 ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER Rth j-c Rth j-a Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient MAX 1.25 62.5 UNIT ℃/W ℃/W [ ... ]

2SK630 PDF Datasheet Download